Q1. Yes. The laws of reflection of sound are. 1. The incident angle is equal to the reflected angle. 2. The incident ray the reflected ray and the normal ray all lie on the same plane. Q2 Because the room is small. Q3. Distance=speed X time. First echo distance. 2d=340m/s X 0.3s 2d=102 d =51m Second echo distance 2d=340m/s X 0.5 2d=170 d=85m. Total distance=51m + 85m Total distance=136m
@BlastyaBihan Жыл бұрын
i think second echo should be 4d becoz it is coming to us back going and coming back to us once again......Prove me wrong...
@SrijitaSahaOfficial Жыл бұрын
@@BlastyaBihanno. They are 2 different echosm
@mathangiaditya42894 жыл бұрын
1 st question answer : Yes . Angle of incidence is equal to angle of reflection . 2 nd que answer : Because there are a few good absorbers in our room to absorb sound like , curtains . 3 rd que answer : 1 ; distance = speed * time 2d = 340 m/s * 0.3 2d = 102 m d = 102 / 2 = 51 m 2 ; 2d = 340 * 0.5 2d = 170 d = 170/2 d = 85 m So, 51 + 85 = 136 metres is the distance between the two hills .
@mathangiaditya42894 жыл бұрын
One more law of light , they all are on the same plane .
@balkimuzam92174 жыл бұрын
Is the answers correct
@mathangiaditya42894 жыл бұрын
@@ashishkalra9661 No , check or hear the video again !
@ashishkalra96614 жыл бұрын
@@mathangiaditya4289 Oh, I got it now. Thankyou!
@mathangiaditya42894 жыл бұрын
@@ashishkalra9661 You're Welcome 😊
@zunairarashed10593 жыл бұрын
1. Yes, it does. The laws are stated below 1st law: the incident angle of sound= reflected angle of sound. 2nd law: the incident sound, normal and the reflected sound lie on the same plane 2. Because of insufficient distance echoes can't be heard in small room. We can differenciate between two sound if the time interval between two sounds is 0.1 second. But in a small distance, the sound reflected takes time less than 0.1 sedond. For this we can't differenciate between two sound and can't hear echoes in a small room. 3. Here, for first hill, V= 340 m/s T= 0.3 seconds 2d= vt Or, 2d= 340× 0.3 Or, 2d= 102 Or, d= 102/ 2 Or, d= 51 Here, for second hill, V= 340 m/s T= 0.5 seconds 2d= vt Or, 2d= 340×0.5 Or, 2d= 170 Or, d= 170/ 2 Or, d= 85 Therefore, total= (85+51) = 136 [ Ans ]
@m.vinayagamjeevath2750Ай бұрын
Q01. Yes The laws of reflection are : 1.The incident ray , the normal drawn at the point of incidence and the reflected ray all lie on the same plane. 2.The angle of incidence is equal to the angle of reflection. Q02. We cannot hear echoes in a small room because the persistence of sound of human ear is 0.1 seconds . In a small room, since the distance travelled by the sound wave is less it is reflected back and reaches the human ear within 0.1 seconds. Thus , the reflected sound cannot be heard distinctly and it's not an echo. Q03. Distance=speed X time. First echo distance. 2d=340m/s X 0.3s 2d=102 d =51m Second echo distance 2d=340m/s X 0.5 2d=170 d=85m. Total distance=51m + 85m Total distance=136m
@amitabhabhattacharyya17599 ай бұрын
Sir... U explain us all concerned topics of Sound in a very lucid way n lively ...really praiseworthy.. Thanx a lot.. Regards 🙏
@SrijitaSahaOfficial Жыл бұрын
1. Yes, it does. The laws of reflection are: i. The incident ray is equal to the reflected ray. ii. The normal, incident ray, reflected ray drawn at the point of incidence lie on the same plane. 2. In small rooms, The distance between dource and reflecting surface is not 17m but smaller than that. Due to which echo is not heard in these small places. 3. 1st echo: T=0.3s D=2d S≈340m/s 340=2d×10/3 D=51 m 2nd echo, D=2d T=0.5s S≈340 m/s 340=2d×10/5 D=85 m Total distance =51+85 =136 m
@sourare82069 ай бұрын
Your answers are smart
@SrijitaSahaOfficial9 ай бұрын
@sourare8206 thanks mate
@powerofmind6253 Жыл бұрын
1.yes! Why not sound also obey the law of reflection because sound also have same angle of incident and reflected sound having same angle and another on same plane. 2.we cannot hear sound in small room due to small distance between source and reflecting surface i.e less than 17m or may be curtains and dull surfaces which absorb sound energy. 3.As we know that. S=v∆t/2 By putting values we get . 343×3/2 =514m. Another we put 343×5/2 =814m Combined we get . 514+814 =1328m Ok sir
@clashbaba23986 жыл бұрын
Sir I'm glad to tell you that I pass my science exam with 78/80 and 79/80 in maths!! Just because of your constant efforts! Thank you sir!
@ManochaAcademy6 жыл бұрын
Wow! Congratulations!! Excellent marks in Science and Maths :) Which class are you in?
@mayadubey80204 жыл бұрын
6th ig 🤣
@AlAmin-ly9nzАй бұрын
😂🎉🎉🎉🎉@@mayadubey8020
@addictionforphysics85094 жыл бұрын
Third question answer is 136 because The man standing between two heals and the man fire the bullet and the sound is reflected from both the hills then Distance traveled 2d at 0.3s Distance =speed * time 2d= 340 * 0.3=51 Distance =speed *time 2d=340*0.5=85 Add both distance 85+51=136🎉🎉
@liibaanphysics81203 жыл бұрын
Why do you use the speed 340m/s ?
@addictionforphysics85093 жыл бұрын
@@liibaanphysics8120 it is speed of sound
@liibaanphysics81203 жыл бұрын
Why don't you use 330m/s as speed of sound.
@addictionforphysics85093 жыл бұрын
@@liibaanphysics8120 340 m/s is the standard speed of sound. If your weight is 50kg and you are taking it 47kg then your answer will come wrong. So 340
@sirpi39403 жыл бұрын
Hw answers: 1 i) angle of incidence is equal to the angle of reflection i= r ii) Incident ray, normal and reflected ray all lie in the same plane 2) we cannot hear echoes in a small room because the size of reflector must be large 3) distance between the two hills is 136m Lovely session ever seen 😍
@DamilareJoseph2347 ай бұрын
Yes,1)
@BizzBooms Жыл бұрын
1 - Yes, sound obeys the laws of reflection. Following are the laws: a -
@bhaskardebnath3249 ай бұрын
1. Yes, sound obey the laws of reflection, they are - The incident ray angle is equal to the reflected ray angle The normal, ray of incidence and ray of reflection all lie on the same plane 2. Our ears need some delay before the sound echo can be heard again, that's why in small spaces, as the sound echoes too quickly, it cannot be heard by the ears 3. 1st echo - T = 0.3s D = 2d S = 340m/s 340 = 2×10/3 D = 51m 2nd echo - D = 85m Total distance = 51+85 = 136m
@roshnib1347 Жыл бұрын
1.yes,
@all8nonechannelchannel.782 жыл бұрын
This sir was the best teacher, because he explains in English , but the other teachers and KZbin channels think they are the best teachers 🙄, but they can't even explain it in English. I kept so many comments in live chat but they are acting that they are not seen my comments 🙄🙄🙄. So you are my best teacher ❤️
@SylveliaIheshiulo4 ай бұрын
You're right
@mamtapadhy11811 ай бұрын
Ur English is so simple And easy! Easy to understand and I remembered it well too! BEST TEACHER EVER! U teach really Good Man!
@reenadasif88433 жыл бұрын
Best teacher ever
@ManochaAcademy3 жыл бұрын
Thanks
@sanjaymohanty40573 жыл бұрын
Yah
@goldeeshorts70362 жыл бұрын
Sir question 3 samag nahi aaraha
@goldeeshorts70362 жыл бұрын
@@ManochaAcademy sir q no 3 samage me nahi aaraha hai
@sambraniviishnnuvardanbabuu Жыл бұрын
@@ManochaAcademy happy birthday manocha academy
@georgemichael22882 жыл бұрын
Qn 01. YES it obey... Qn 02. For an echo to occur, it needs at least 17m from an obstacle to listener. Qn 03. The answer is 136 m, (I took velocity of sound in air as 340 m/s)
@Biblogigonogogga2 жыл бұрын
yee6
@legendsshorts_1013 жыл бұрын
Sir you always teach in a proper and easy way.Thank you for this video.It helped me a lot.
@emmyfunzamize7 ай бұрын
I am from Nigeria I love ur teaching sir I wish I had a teacher like you here
@metuselaonesmo50055 жыл бұрын
sir I have loved your teaching style and the vivid examples that you give in your videos
@ManochaAcademy5 жыл бұрын
Thanks a lot :)
@santoshyadav-fe5nr3 жыл бұрын
@@ManochaAcademy FFS a good day today I was just thinking about right for me to do it for you to be with you and I have to do it for me and I don't know if you want to go to the store to get a new one for me to do it for you to know if you don't have a good day today and I have to be there in Sir John Salmond is wrong
@j.govardhanammaj.govardhan7171 Жыл бұрын
You are the best teacher that l had ever seen. The way you are teaching is perfect and easy to understand the concept
@quizforyou25742 жыл бұрын
1)Yes, sound obey the law of reflection That is angle of incidence=angle of reflection. 2)room is a small place. The minimum time gap to hear echoes (0.1s). And in room curtains, carpets,and other objects absorb the sound. 3)1st hill=56m 2nd hill=85m So, distance between two hills=136m Thank you a lot sir❤️❤️❤️
@FreezyRishabh Жыл бұрын
56+85=141m
@learnwithg.k.s.54813 жыл бұрын
Excellent video Answers are 1. Yes,Laws of reflection of sound are a. Angle of incident of sound is equal to angle of reflection of sound. b. Normal,angle of reflection of Sound and angle of incident of Sound lie on the same plane. 2.We cannot hear the echoes in a small room because the area of a room must be large for echoes to be produced
@AastabolProductions2 жыл бұрын
I'm doing sound engineering. Your videos are helping me a lot. Thank you sir ❤🙏
@HarpreetKaur-mb5sp3 жыл бұрын
You teaches very well thanks for explaining such an interesting chapter…
@yashstarkumar18013 жыл бұрын
Ye 1:yes Laws of sound is Echoes and reverberation 2: To listen echones sound the area will be more then we listen .in small room we can't listen because its area will be less .. 3:Distance=speed*time 1st one =2d=340m/s*0.3s Then 2d=102 D=102/2 D=51m 2one =2d=340*0.5s Then 2d=170 D=170/2 D=85 Then1+2= 51+85 =136
@exploringnature11513 жыл бұрын
Echoes and reverberation are not the laws of sound and Qno 2 u can directly answer that there is no time gap or very very less
@RamRam-gs1so5 жыл бұрын
1: yes it does , incident rays = reflected rays 2: beacuse large distance help hear echoes (minimum distance between speaker n reflector should be more than 17 metres ) 3: 1- 51 2- 85( 51 +85=136) Distance between the two hills is 136
@ManochaAcademy5 жыл бұрын
Q1 Correct. But you have to give the 2 laws of reflection that light has. Q2 Right! Also mention minimum time is 0.1s to hear echo. Q3 Correct answer :)
@asmamomin69223 жыл бұрын
Best teacher in the universe. ....thanks a lot sir
@ManochaAcademy3 жыл бұрын
Wow, thanks
@cedrickmabowa5071 Жыл бұрын
My best teacher,I'm corresponding student in South Africa and I rely on your videos to learn
@ARJUNFFKING-wn4cw9 ай бұрын
Sir. I love the way u are teaching i could understand everything ❤🔥❤🔥❤🔥
@ManochaAcademy9 ай бұрын
Thanks a ton
@rabbitkook9377 ай бұрын
1.Yes and firstly there are 3 laws of reflection which are:- a. Angle of incidence = angle of reflection b. Incident ray, reflected ray and normal lie on same plane c. Incident ray and reflected ray are on the either side of normal 2. The distance of our ear and the wall is less than 17.2 m 3. 136 meter
@harshithgowni15285 жыл бұрын
1) Sound does obey the laws of reflection. The laws of reflection for sound is 1. The angle of incidence is equal to the angle of reflection. 2. The incident sound, reflected sound and normal all lie on the same plane. 2) We can't hear echoes in a small room because echoes need a minimum distance of 17m to produce an echo and a room has a much smaller distance than 17 metres. 3) 34m
@ravirk73155 жыл бұрын
U r done a good job 3question explanation
@ravirk73155 жыл бұрын
Time gap diff is 0.2 sec
@ManochaAcademy5 жыл бұрын
@Harshi Gowni, Very good!! Q1 and Q2 answers are correct :) Q3, answer should be 136 m. For this question, draw a rough diagram of a man standing between two hills. Let the distance of one hill from the man be 'a' and other hill from man is 'b'. So total distance between to hills is 'a + b'. As discussed in video, for echo since sound travels twice the distance, formula is: 2d = speed x time, where d is the distance. Since it's not given in the sum, you can take speed of sound in air as 340 m/s (or any standard value that you use). Now consider each hill separately: For first time t1 = 0.3 s, we can do 2a = 340 x 0.3. So a = 51 m For 2nd time t2 = 0.5 s, we can do 2b = 340 x 0.5. So b = 85 m So total distance = a + b = 136 m. Let me know if it is clear now!
@harshithgowni15285 жыл бұрын
@@ManochaAcademy thanks so much you're videos are so good
@ManochaAcademy5 жыл бұрын
Thank you :) Do share our videos with your friends and family!
@vishwashn9334 жыл бұрын
8 years back If I would have got you like teacher, or these type of study material in my PUC I would have got distinction..... Although I worked hard I couldn't understand these silly topics.. but practically I understood everything now, although it may not help in my studies or career now... Thk u heartly teacher....
@vedparmar654 жыл бұрын
Q-1) Yes, the laws of reflection of sound are as follow Incident rays go ang coming ray is reflected ray. Q-2) We cannot hear echoes in a small room because we hear an echo in a distance of 17 metres or more from the reflecting surface / an area because equal distance in the forward reverse is direction. Q-3) Distance = speed × time Therefore, A) 1st D = 340m/s × 0.3s = 102m B) 2nd D = 340m/s × 0.5s = 170 m Total D = 272m
@josy264 жыл бұрын
The total would be the total distance travelled by sound which is not the same as the distance between the two hills, that would be double. So you'd just have to divide it by 2.
@ankushgarg77143 жыл бұрын
Best teacher ever ☺️😊
@ManochaAcademy3 жыл бұрын
Thanks
@polly8463 жыл бұрын
he is 😀
@saudshaikh36793 жыл бұрын
THANKS FOR YOUR EFFORT
@ManochaAcademy3 жыл бұрын
Our pleasure!
@Amuvlogs-h8h3 жыл бұрын
What is sound
@ritikroy48592 жыл бұрын
@@artwithshubhojit3816 tera baap bekar phadaha hai nubrd
@artwithshubhojit38162 жыл бұрын
@@ritikroy4859 Pls subscribe our channel 😁😎
@hazmatt00933 жыл бұрын
Fantastic lesson. Strong explanations and examples that are easy to understand. My 8 year old was able to answer all of the questions correctly!
@Sr-us6io2 жыл бұрын
1)it obeys and laws of reflection is the reflection of light is equal to angle of incidence. 2)it should be nearly 17m wide room to hear the sound of echo. 3)
@Dinesh72196 жыл бұрын
Thanks.. and great experience.. Recollecting all that I hv studied between 44 & 40 yrs ago.. The audio video facilities wld hv made a great difference in those days..and our generation wld hv been a different altogether.. We had only black & white stereotyped books..
@ManochaAcademy6 жыл бұрын
Thanks a lot :) Great to hear that you liked the video!! Very true, the audio visual aids are greatly enhancing the learning experience and making it more visual for the students today!
@lekshmipriya24673 жыл бұрын
Really it is very useful for us Very good teaching😃 Thank you so much 🙏🏻🙏🏻🙏🏻
@ManochaAcademy3 жыл бұрын
It's my pleasure
@THV__JAANot7Күн бұрын
Sir you are explaining everything in an simple and understanding way thank you so much 😊😊
@rathorekuldeep58118 ай бұрын
1.yes, angle of incidence is equal to angle of reflection and angle I,angle r and normal lie I'm the same plane 2.Because reflecting surface is smaller than the wavelength of sound wave 3.136 m
@dishatarkar68199 ай бұрын
Best channel for physics So simple videos 😊
@jyothirmaikodimadugu20934 жыл бұрын
Sir your way of explanation was superb
@maryalia66244 жыл бұрын
1. Yes... the angle of incidence is equal to the angle of reflection and the incident Ray, the normal and the reflected Ray at the same point of incidence all lie on the same plane. 2. We can't hear Echoes in a small room because sound doesn't reflect back. 3. d=51m d=85m. Thank you sir. Your explanation was superb 👌👏👏👍
@maryalia66244 жыл бұрын
Then add up the distances=51+85=136m.😋🤗😇
@rajashreesarna97513 жыл бұрын
Hi sir! This link was sent to us by our teacher before the exam. These videos really helped. thank you!!!!!
@ManochaAcademy3 жыл бұрын
Glad it was helpful!
@kittylifyyy3 жыл бұрын
Yes Same!
@sinendereje1130 Жыл бұрын
You are the best teacher I ever seen thanks
@_Anjalithisside_3 жыл бұрын
Amazing teacher with amazing topic
@penguinzoneytАй бұрын
For anyone who requires the answer to the third question: To calculate echo distance, you'll require the general formula to calculate the distance of the echo, which is: "2d = s × t". Hence, we'll be required to do the following steps in order to calculate the echo distances: 1. Calculate the distance of first echo: 2d = 343 × 0.3 d = 102.9 / 2 d = 51.45 meters 2. Calculate the distance of second echo: 2d = 343 × 0.5 d = 171.5 / 2 d = 85.75 meters 3. Sum up the distances between two echos, to find the total distance: 85.75 + 51.45 = 137.2 meters. Hence, the distance between the two mountains would be 137.2 meters. Happy to Help !🤗
@THV__JAANot7Күн бұрын
Thank you so much friend 😊😊
@penguinzoneytКүн бұрын
@@THV__JAANot7😊
@anshikajaiswal1853 жыл бұрын
1.yes..it obeys the law of reflection...
@valentinoeditz91543 жыл бұрын
Pls solve no 3
@jiviteshtutorials.....55973 жыл бұрын
Sir your teaching is very interactive and you mainly show the daily life examples....by using different equipments,toys,models and many more ..... Sir thank u for ur effort for us .. 🙏🙏❤️❤️
@funnymemes9243 жыл бұрын
Sir your explanation is the best. It helps us a lot please keep teaching. Love you sir.☺️🙂
@ManochaAcademy3 жыл бұрын
So nice of you
@taanniaaa274 жыл бұрын
For online classes this really helps , thank u so much
@abuhenamunna93982 жыл бұрын
Sir, you are a future maker.
@ashishbabu64945 жыл бұрын
Thanks for ur video sir...I really Loved it... Q1.yes,the law of reflection is the angle of the incident ray is equal to angle of reflected ray Q2.because ,the distance should atleast 17 m to hear the echo Q3.31 m
@ManochaAcademy5 жыл бұрын
Happy to hear that you liked the video! Thanks :) Do check out more videos at www.manochaacademy.com Q1 and Q2 are correct! Q1 you can also write the 2nd law: incident sound, reflected sound and the normal all lie on the same plane. Q3, answer should be 136 m. Here is the solution: For this question, draw a rough diagram of a man standing between two hills. Let the distance of one hill from the man be 'a' and other hill from man is 'b'. So total distance between to hills is 'a + b'. As discussed in video, for echo since sound travels twice the distance, formula is: 2d = speed x time, where d is the distance. Since it's not given in the sum, you can take speed of sound in air as 340 m/s (or any standard value that you use). Now consider each hill separately: For first time t1 = 0.3 s, we can do 2a = 340 x 0.3. So a = 51 m For 2nd time t2 = 0.5 s, we can do 2b = 340 x 0.5. So b = 85 m So total distance = a + b = 136 m. Let me know if it is clear now!
@himansusahoo5864 жыл бұрын
Sir my all doubt are clear after this video
@ManochaAcademy4 жыл бұрын
Glad to hear that.
@karthikarekha578 Жыл бұрын
i love physics thanks for making chapter so easy and another for your top 3 questions truly they are exam oriented and you are my most fav teacher thanks you sir ...
@srirakshitha64644 жыл бұрын
sir you are the best teacher
@ManochaAcademy4 жыл бұрын
It's my pleasure
@atharvaffop55213 жыл бұрын
@@ManochaAcademy 🙏🙏🙏
@mariajohnyam20963 жыл бұрын
You may assist me with these questions; 1. A girl stands 160m away from a high wall and claps her hands at a steady rate so that each clap coincides with the echo of the one before. If she makes 60 claps in one minute, calculate; A) the speed of sound. B) If she moves 40cm closer to the wall, she finds that the clapping rate has to be 80 per minute, calculate the speed of sound.
@kashinathkarmakar95525 жыл бұрын
(Answer of Q1) Yes, sound obeys the laws of reflection. Laws of reflection of sound --- (i) Angle of incidence=angle of reflection. (ii) incident sound, reflected sound and the normal lie on the the same plane. (Answer of Q2) For hearing echoes, the minimum distance between the speaker and the reflecting surface should be 17m. In small rooms, the distance is less than 17m and hence, we cannot hear echoes in small rooms. (Answer of Q3) Distance=speed X time The distance between the man and the 1st hill=(340m/s X 0.3s)/2 =51m The distance between the man and the 2nd hill=(340m/s X .5s)/2 =85m So the total distance between the two hills=(51+85)m=136m.
@JacquelineMwansa-q7x9 ай бұрын
You are the best teacher thanks sir iam now able to answer some questions from this topic
@ujjalbaraily96713 жыл бұрын
U r a really very good teacher
@ManochaAcademy3 жыл бұрын
It's my pleasure
@breshamasters8613 Жыл бұрын
You are best teacher in the universe
@PGR-TRAINERS3 жыл бұрын
Your service is very useful. Thank you very much sir.
@ManochaAcademy3 жыл бұрын
You are most welcome
@gabbyluvzyou3 жыл бұрын
@@ManochaAcademy how did you do that?
@shantanukhetkade25043 жыл бұрын
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@RohitJ-ej6xx3 жыл бұрын
Ans 1 Yes, it obeys the laws of reflection. Two laws of reflaction are a. Angle of incidence, reflaction and normal all lie in same plane. b. Angle of reflection is equal to angle of reflection i=r Àns2- we cannot hear the echo sound because of our lower sensitivity of ear and dur to less space. Ans 3- ....
@MaheshKumar-fe8fm3 жыл бұрын
1. The angle of incident=angle of reflection 2. Because their very little distance 3. First hill distance is 102. And second hill distance is 170 Total is 272.. Sir please check it and reply
@yasminotsmane73845 жыл бұрын
Your method in teaching is very good thank you 🙏 I got a test tomorrow and your videos help alote
@ManochaAcademy5 жыл бұрын
Happy to hear that video was helpful :) All the best for your test!!
@rameshpriya76003 жыл бұрын
I like ur method of teaching sir it's too good and understandable Thanks a lot sir🙏🙏
@ManochaAcademy3 жыл бұрын
It's my pleasure
@vedanthgovindan58247 ай бұрын
00:05 This video is about the reflection of sound. 01:40 Sound reflection follows similar laws as light. 03:21 Reflection of sound leads to echo and reverberation. 05:01 Understanding sound reflection in large spaces 06:44 Hill absorbs sound energy resulting in softer second hello. 08:24 Reverberation is the persistence of sound caused by overlapping reflections. 10:04 Balance between sound absorption and reverberation in acoustic engineering 11:39 Absorbers reduce sound reflection in the house
@ravindrachanne7613 жыл бұрын
You are genious & excellent teacher.your method of teaching practically is very nice & make the besic concept of each topic of science strong .
@zazislamicchannel75654 жыл бұрын
8:49 watch it looks real that sir goes there
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Sir you teach far better than any other teacher...,✨🤩
@MariaShikololo Жыл бұрын
U are good teacher I ever seen in my life 😢
@ManochaAcademy Жыл бұрын
Thanks for liking
@sarabdeepsinghsartaj45034 жыл бұрын
Sir second answer is: Because of room size, it is small to the sound travels short distance
@nnamdimarcel45562 жыл бұрын
Please Sir, help me with the solution to the question below: The speed of sound in air is 330ms-1. How far from the centre of a storm is an observer who hears a thunder clap 2s after the lightning flash? (Neglect the time taken by light to travel to the observer)
@marty90192 жыл бұрын
The speed of sound in air is 330ms-1. This means that 1 second represents 330m. Now, in the question it says that it takes 2s for the sound to travel from the centre of the storm to the observer this means that the distance at which the oobserver is standing is 330m x 2s. Now here you can remove the units of those values to make it a little less complicated. Acoording to all this your answer I think should be 660m. Hope it helps! Goodluck!
@skandakumar17143 жыл бұрын
I understood this concept very easily.Super sir.Thank you.You are great.
@ManochaAcademy3 жыл бұрын
You're most welcome
@anshulverma24403 жыл бұрын
@@ManochaAcademy thank u sir i also understand this concept completely . you are great sir
@premakumarir.94954 жыл бұрын
Good explanation sir, thank you sir this helps me in doing online home works ..
@ManochaAcademy4 жыл бұрын
You are welcome
@nikitha6550 Жыл бұрын
Q1: yes , sound obey laws of reflection Reflection of sound -insident ray ,it's carrospoing reflected and the normal lay on the same plane Q2: we cannot hear eho in a small room because there are good absorbers of sound . And echo is possible in large area where it contains the reflector of sound
@drramakrishnan555 жыл бұрын
Hello sir. I don't lyk physics that much before watching your video. Thank you sir
@ManochaAcademy5 жыл бұрын
Great to hear that you liked the video :) Do check out more videos at www.manochaacademy.com
@punamsharma17344 жыл бұрын
1.Yes the sound obeys the laws of reflection. First law-The angle of incidence is equal to the angle of reflection. Second law-the angle of incidence,the angle of reflection and the normal ray all lie in the same plane.
@jaanvidesai44173 жыл бұрын
The explanation was so nice i liked the video so much and i learned this without any doubt From Taanvi Desai
@ManochaAcademy3 жыл бұрын
Thanks a lot 😊
@Creativity-j3x4 жыл бұрын
i had liked your video and get inspired by you sir by teachings and explanation
@ManochaAcademy4 жыл бұрын
Glad to hear that
@tamannasantamoni8229 Жыл бұрын
Sir, you should give the velocity of sound or the temperature for the question 3.
@sarikabalse67247 ай бұрын
Exactly... there is a similar question in our ssc tb
@prakritiranjanranjan23694 жыл бұрын
Thank you sir for expansion As you are the best teacher of the world
@ManochaAcademy4 жыл бұрын
Welcome
@divyanshgupta80365 жыл бұрын
A2: we cannot hear echoes in a small room because the room is so small and time taken by sound to get reflected and reach our ear is less than 0.1 seconds so our ears are not so sensitive to hear it
@varshalokhande59742 жыл бұрын
Sir I have two questions and answers only 1.answer is yes.sound follows the same laws of reflection as light. And 2. Answer is because small rooms absorb more sound. Sir but I don't have three one answer the questions sorry sir
@krishnamacha8614 жыл бұрын
Such a amazing teacher
@ManochaAcademy4 жыл бұрын
Thanks
@akokojaber98314 жыл бұрын
@@ManochaAcademy how do i get the video of the questions
@technologyandspacenews54203 жыл бұрын
Thank you for the information sir.... I'm the fan of your explanation and your animations 👍.
@ManochaAcademy3 жыл бұрын
You are most welcome
@j1n5a4 жыл бұрын
thank u so much sir for the well explanation u gave
@ManochaAcademy4 жыл бұрын
You are most welcome
@ThierryPBeaulieu3 жыл бұрын
You monsieur, have a knack for explaining stuff! Thanks! :)
@ManochaAcademy3 жыл бұрын
Happy to help!
@gymlover16173 жыл бұрын
Good teaching method .adorable .nice
@ManochaAcademy3 жыл бұрын
Many many thanks
@Anilsir554 жыл бұрын
Thanks sir, you explain the topics easily than my school teachers. I am using to learn from you in lockdown.
@dericksworld40923 жыл бұрын
Thanks for this class
@ManochaAcademy3 жыл бұрын
You are welcome
@arunimaroy4477 Жыл бұрын
1)Yes it does,It's incident Ray is parallel to the Reflected ray and the angle of Incidence is equal to the angle of reflected ray. 2)It is because in a small room the reflected sound distance is not enough which is 17 m
@PraniPravi Жыл бұрын
Can it be 17 or above
@PraniPravi Жыл бұрын
Less than 17 iwe can't hear ha
@chinmayeepati48094 жыл бұрын
Sir please explain absorption of sound
@avrrockstar59235 жыл бұрын
sir 3rd answer is distance=speed.time so, 4d=340m/s x 0.8=272m so d=68m